Kennametal 1153190 Carbide Jobber Drill Bit 5/8 in

Product Description

The KENNAMETAL 1153190 is a solid carbide jobber-length drill bit designed for high-performance drilling in demanding industrial and machining applications. Built to DIN 6537L specification, it features a 5/8 inch (0.6250 inch) diameter, a 130-degree point angle, and a three-flute spiral configuration with web thinning for improved chip evacuation and reduced thrust. The bright (uncoated) finish suits applications where coating is not required or where post-process treatments will be applied. At 5.24 inches overall length with a 3.23-inch flute length, this bit handles depths up to 2.54 inches per pass.

This drill bit is suited for precision drilling operations in metals and engineered materials where tight tolerances and tool rigidity are critical. The straight-cylindrical shank and parallel web design make it compatible with standard drill chucks and collet systems commonly found in CNC machining centers, drill presses, and manual milling setups. It is targeted at machinists and tool-room professionals working in production or job-shop environments.

Key Features

• Solid carbide construction rated at material grade K10 for rigidity and wear resistance
• 130-degree standard point angle with web-thinned tip reduces entry force and improves centering
• Three-flute spiral design provides efficient chip evacuation compared to standard two-flute geometry
• Bright coating finish with diameter tolerance of +0.0003 to +0.0010 inches for close-tolerance work
• DIN 6537L specification ensures dimensional consistency for tool-crib standardization
• Maximum drilling depth of 2.54 inches per pass without retraction

Compatibility

Designed as a jobber-length replacement drill bit for applications requiring a 5/8 inch straight-cylindrical shank carbide bit conforming to DIN 6537L geometry. Compatible with standard drill chucks and collet holders accepting a 0.6250 inch shank diameter.

Installation Notes

Installation and use should be performed by qualified machinists familiar with carbide tooling handling and CNC or manual machine operation. Ensure the spindle is fully stopped and the machine is locked out before changing tooling. Carbide is brittle — avoid side loading, interrupted cuts without proper parameters, or dropping the bit on hard surfaces. Confirm chuck or collet runout is within acceptable limits before use, as excessive runout will shorten tool life and degrade hole tolerance.